<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			body{
				margin: 0;
				display: flex;
				justify-content: center;
				align-items: center;
				height: 100vh;
			}
			.content{
				width: 200px;
				height: 350px;
				background: #fc3;
				position: absolute;
				left:0;
				top:0;
			}
			.shadow{
				width: 200px;
				height: 350px;
				background: #a9a9a9;
				position: absolute;
				left:10px;
				top: 10px;
				z-index: -1;
				filter: blur(10px);
			}
			.box{
				width: 200px;
				height: 350px;
				position: relative;
			}
		</style>
	</head>
	<body>
		<div class="box">
			<div class="content"></div>
			<div class="shadow"></div>
		</div>
	</body>
</html>
